Key takeaways
- Cleavers has whorls of six to eight narrow leaves and stems covered in tiny hooks
- It sprouts in autumn and spring, then flowers and sets sticky seed in early summer
- Pull it while it's young, before flowers appear around May
- Roll pulled stems into a ball as you go so the seeds don't scatter
- Compost young plants, but bin any with flowers or seeds
- Check hedges for nesting birds before pulling cleavers out of them in spring
Cleavers is the clingy weed that scrambles over hedges and borders in spring, sticking to everything it touches. Children call it sticky willy or goosegrass. It’s an annual, so the whole game is stopping it from setting seed.
Pull it while it’s young, before it flowers in late spring, and mulch bare soil to stop the next lot. Here’s how to spot it and clear it without spreading it further.
How to identify cleavers
Cleavers (Galium aparine) is easy to recognise once you’ve felt it.
- Leaves: narrow and pointed, in whorls of six to eight around the stem, like the spokes of a wheel
- Stems: square, weak and sprawling, often over a metre long when they climb
- Feel: covered in tiny backward-pointing hooks that cling to clothes and skin
- Flowers: tiny, white, four-petalled, in late spring and early summer
- Seeds: small, round, bristly burrs, usually in pairs, that stick to fur and socks
The whorled leaves are the giveaway. Run a finger up a stem and it slides. Run it back down and it grips. If you’re unsure about other weeds, our common garden weeds identification guide shows them side by side.
The round, bristly burrs are cleavers seeds. Once you see these, the plant is already spreading.
When cleavers grows and seeds
Cleavers sprouts mainly in autumn, with a second flush in early spring. Seedlings grow slowly over winter, then shoot up in March and April and scramble over anything nearby.
Tiny white flowers appear from around May, and seed burrs follow soon after. By midsummer the plants turn yellow and die, leaving seeds in the soil and stuck to passing animals.
That makes autumn to April the best time to pull. Plants are easy to see and haven’t seeded yet. Seeds in the soil keep sprouting for a few years, so expect some each season while you clear it.
How to pull cleavers
Cleavers has shallow roots and pulls up easily. The trick is not scattering seed as you go.
- Wear gloves and long sleeves. The hooks cling and can irritate skin.
- Grip the stem low down near the soil and pull gently upwards.
- Roll the stems into a ball as you pull. They stick to themselves, which keeps any seeds together.
- Drop it straight into a bucket or bag, not on the ground.
- Tease it out of hedges from the top, pulling downwards and away rather than dragging it through.
In veg beds, hoe seedlings on a dry day while they’re small. Our guide to hoeing borders covers the technique.
Wildlife note: Hedges are prime nesting sites from March to August. Check carefully before tugging cleavers out of a hedge. Disturbing an active nest is an offence, so leave that stretch until the young have flown.
Rolling the stems into a ball as you pull keeps any seeds together, so they go in the bag and not on the border.
Mulch to stop new seedlings
Most cleavers seeds sprout near the surface. A layer of mulch over bare soil in autumn stops many of them coming up.
- Spread 5-7cm of bark, woodchip, leaf mould or garden compost over weeded soil in September or October.
- Pay attention to the hedge bottom, where seeds drop and collect.
- For a weedy patch, lay cardboard under the mulch to smother seedlings. Our cardboard and grass mulch guide shows how.
Pull any seedlings that push through. With mulch and regular pulling, there are fewer each year.
A strip of bark along the hedge bottom in autumn smothers seedlings where cleavers seeds tend to collect.
Can you compost or eat cleavers?
Compost young cleavers that haven’t flowered. Plants with flowers or burrs can still ripen seed on the heap, so put those in the green waste bin unless your heap gets really hot.
Eating: young cleavers shoots are sometimes cooked like a leafy green. Only pick from unsprayed ground, wash well and be sure of your identification. Our edible garden weeds guide covers other weeds worth picking.
Only the young, tender shoots are worth picking. Older stems are tough and very clingy.
Cleavers calendar
| Month | What to do |
|---|---|
| September to October | Pull autumn seedlings. Mulch hedge bottoms and bare soil |
| November to February | Pull any plants you spot in mild spells |
| March to April | Main pulling time as plants shoot up. Check hedges for nests first |
| May | Pull before flowers set seed. Bin flowering plants |
| June to August | Plants seed and die. Bag any you pull. Brush burrs off clothes and pets |
Common mistakes with cleavers
Waiting until it flowers. By then seeds are forming and pulling scatters them. Get it in spring.
Composting seeding plants. The burrs can survive a cool heap. Bin plants that have flowered.
Dragging it through a hedge. It snaps and leaves bits behind. Tease it out from the top.
Ignoring the hedge bottom. That’s where seeds build up. Mulch it every autumn.
Forgetting pets. Dogs and cats carry the burrs around the garden. Brush them off after walks through weedy patches.
Frequently asked questions
How do I identify cleavers?
Look for whorls of six to eight narrow leaves around a square stem. The stems and leaves feel sticky because they are covered in tiny backward-pointing hooks. Tiny white four-petalled flowers appear in late spring.
When should I pull cleavers?
Pull cleavers while they’re young, from autumn to April. Seedlings are easy to pull and haven’t flowered yet. Once flowers and seeds form in early summer, pulling can scatter seed.
Why does cleavers stick to clothes?
Its stems, leaves and seeds are covered in tiny hooks. They catch on fabric and animal fur like Velcro. That’s how the plant spreads its seeds.
Can you compost cleavers?
Yes, if it hasn’t flowered. Plants with flowers or seeds can still ripen seed on the heap. Put those in the green waste bin or a hot compost heap.
Are cleavers good for anything?
Young shoots can be cooked like a leafy green. Only pick from unsprayed ground and be sure of your identification. Cleavers is also a food plant for some moth caterpillars.
Is it safe to pull cleavers out of a hedge?
Yes, but check for nesting birds first in spring and summer. Disturbing an active nest is an offence. If you find one, leave that section until the young have flown.
More weed guides are in the problems hub. Another weed to catch before it seeds is chickweed, which carpets bare soil at the same time of year.
Our team produces practical UK gardening guidance from source research, contributor records and established horticultural practice. Editorial standards are overseen by Matt W.
